Polypodium cambricum 'Cambricum'

RHS Plant Profile
Welsh polypody 'Cambricum'

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Welsh polypody 'Cambricum' RHS

Synonyms

Polypodium australe 'Cambricum'

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Ferns
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A semi-evergreen fern with creeping rhizome, the broadly ovate fronds pinnate with deeply laciniately-toothed pinnae; new fronds appear in late summer

Position

Full sun, Partial shade

Soil Types

Chalk, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.5-1 metres

Size

Time to Maturity
2–5 years
Max Spread
0.5-1 metres
Max Height
0.1-0.5 metres

Growing Conditions

Chalk Loam Sand
Moisture
Moist but well–drained
pH
Alkaline or Neutral

Position

Full sun Partial shade
Aspect
West–facing or South–facing or East–facing
Exposure
Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

  • H1A: under glass all year (>15C)
  • H1B: can be grown outside in the summer (10 - 15)
  • H1C: can be grown outside in the summer (5 - 10)
  • H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
  • H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
  • H4: hardy through most of the UK (-10 to -5)
  • H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
  • H6: hardy in all of UK and northern Europe (-20 to -15)
  • H7: hardy in the severest European continental climates (< -20)
H7

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Polypodiaceae
Native to GB/Ireland
No
Foliage
Semi evergreen
Habit
Matforming
Genus
Polypodium can be evergreen or deciduous ferns, with creeping rhizomes bearing simple or pinnate fronds at intervals
Name Status
Accepted

How to Grow

Cultivation

Grow in moderately fertile, humus-rich, gritty or stoney, well-drained soil in sun or dappled shade. A fern for a neutral to alkaline soil, in a sheltered position

Propagation

Propagate by spores at 15-16°C (59-61°F) when ripe. Divide in spring or early summer

Suggested planting locations and garden types

  • Cottage and informal garden
  • City and courtyard gardens
  • Coastal
  • Patio and container plants
  • Ground cover
  • Underplanting of roses and shrubs
  • Banks and slopes
  • Flower borders and beds

Pruning

Remove fronds as they become untidy

Pests

Generally pest-free

Diseases

Generally disease-free